Step for stairways.



Patented Sept. l2, I899.

No. 632,7l5.

H. J. HAMILTON.

STEP FOR STAIBWAYS, 99) (Application filed July 30, 1898. Ranawed July 31, 18

(No Model.)

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0 2 X o o o ma'mu, n c. s wrrzws 0O. worouma, WLSN Tn: NOHRI NITED STATES PAT NT OFFICE.

HENRY .T. HAMILTON, OF TORONTO, CANADA.

STEP FOR STAIRWAYS.

Si ECIFICATION forming part of Letters Patent No. 632,715, dated September 12, 1899. Application filed July 30,1898. Renewed July 31, 1899. Serial No. 725,663. (No model.)

T0 60% whom it may concern.-

Be it known that I, HENRY JAMES HAMIL- TON, of the city of Toronto, in the county of York and Province of Ontario, Canada, have invented certain new and useful Improvements in Steps for Stairways; and I hereby declare that the following is a full, clear, and exact description of the same.

This invention relates to certain new and useful improvements in steps for stairways or other entrances to buildings.

Accidents are continually occurring, in some cases resulting in serious or permanent injury and occasionally in the loss of life, by the foot slipping on the step in ascending or descending a stairway. To obviate this danger-that is, to so construct the step that the foot will be prevented from slippingand to so arrange the step that the movement of the foot when being placed thereon or elevated therefrom will not be impeded is part of the object of the present invention, while the other part of the object is to so construct the step and its riser that they can be readily made and easily and securely assembled; and the invention consists, essentially, of a plurality of risers, each having a rearwardly-projectinghorizontal flange at the top and a similar flange at the bottom of the body portion, and a plurality of steps, each having two rearwardly-projectinglugs through which and the bottom flange of the next successive riser above it pass locking-bolts fastening the riser and step together, a flange depending from its front edge to engage the front of the body portion of the next successive riser below it, bolts passing through the step and the top flange of the riser, a longitudinal groove or grooves in the top of the step contiguous to and preferably parallel with the front edge, and an antislipping material-such as lead or other soft metal or leather or rubber or other material having a similar naturecontained within the saidgroove or grooves, as hereinafter more fully set forth, and more particularly pointed out in the claims.

In the drawings, Figure 1 is a sectional perspective View of a section of a stairway. Fig. 2 is a plan View of one of the steps.

Like letters of reference refer to like parts throughout the specification and drawings.

A represents the step, which consists, preferably, of a rectangular-shaped piece of material of the, requisite length, breadth, and depth. The nose a of the step is rounded and terminates in a flange a, projecting. below the under side of the body portion of the step. The step A is provided with two horizontal lugs 13 B, projecting rearwardly from the obverse edge a of the body portion.

C O represent two longitudinal grooves contiguous to and preferably parallel with the front edge or nose a. The grooves O O are preferably of the dovetail formation, although grooves of any other shape could be made to answer the purpose.

D D represent strips of antislipping material placed withinthe grooves O O. This ma terial may consist of lead or other soft metal of asimilar nature, or itmay consist of leather or rubber or other similar material which will prevent the foot slipping on the step and at the same time allow it to be placed on it or elevated from it without impediment. It is preferable to make the step of cast-iron and cast the longitudinal grooves in it. The step, however, can be made of any other material such as wood, slate, stone, or metal other than cast-iron-and the grooves formed by any well-known method for that purpose.

E represents the riser, which consists of a body portion e, a horizontal flange e at the top of the body portion 6, and a horizontal flange e at the bottom of the body portion. The flanges e 6 project rearwardly from the body portion e. The flange 6 is provided with bolt-holes corresponding in number and location with a set of bolt-holes formed in the body portion of the next successive step above it, while the flange e is provided with a set of bolt-holes corresponding in number and location with the bolt holes formed through the lugs B B of the next successive step below it. Passing through the boltholes of the flange e and body portion of the next successive step A above the riser are a set of bolts F, and passing through the boltholes in the flange e and lugs B B of the next successive step below the riser are a series of bolts F. By means of the bolts F F the riser and steps are bolted together. The flange a overlaps the top of the front of the body portion of the riser and consists in holding the several parts securely in position.

The top surface of the step A between the grooves C O and the back edge is roughened or serrated or provided with diamond-shaped projections to assist the antislipping mate rial in preventing the slipping movement of the foot.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A step consisting of a body portion having a longitudinal groove or grooves formed in the top surface of the body portion, contiguous to and parallel with the front edge, antislipping material contained within the grooves, lugs projecting rearwardly from the obverse edge ot the body portion, in combination. with a riser consisting of a body portion, rearwardly-projecting flanges at the top and bottom of the body portion, bolts passing through the top flange of the riser and bodyportion of the next successive step above it, and bolts passing through the bottom flange and the lugs of the next successive step below it, substantially as specified.

2. A step consisting of a body portion having a longitudinal groove or grooves formed in the top surface of the body portion, contignous to and parallel with the front edge, antislipping material contained within the grooves, lugs projecting rearwardly from the obverse edge of the body portion, incombination with a riser consisting of a body portion, rearWardly-projecting flanges at the top and bottom of the body portion, bolts passing through the top flange of the riser and body portion of the next successive step above it, bolts passing through the bottom flange and the lugs of the next successive step below it, and a flange at the front edge of the step overlapping the top of the front of the body portion of the riser, substantially as specified.

Toronto, Canada, July 27, A. D. 1898.

H. J. HAMILTON.

In presence of- F. J. TRAVERS, C. H. RICHES. 

